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Device Info

Show what your browser reports about this device: screen size, platform, cores, language and public IP address.

What Device Info does

Every page you visit can read a set of properties from your browser. This tool displays them so you can see what that actually amounts to, which is useful when debugging a layout, filing a bug report, or simply understanding what sites can tell about you.

One value is different from the rest. Your public IP address is not something the browser knows, so it has to be looked up by asking an outside service.

  • Screen resolution and current window size
  • Browser language, platform and user agent string
  • Reported CPU cores and, in some browsers, device memory
  • Public IP address of your connection

How to use Device Info

  1. 1

    Read the values

    Everything is collected when the page loads. There is nothing to submit.

  2. 2

    Use them in a bug report

    The user agent and window size are the two values most often requested when reporting a rendering problem.

Limits and known behaviour

  • These values are what the browser chooses to report, and they can be wrong. Privacy features and browser settings deliberately alter or freeze several of them.
  • Device memory is only reported by Chromium-based browsers; elsewhere it shows as unknown.
  • The user agent string is increasingly frozen or reduced, so it is a poor way to detect a device.
  • An IP address identifies a network connection, not a person, and a VPN, proxy or mobile carrier gateway will show that intermediary instead of you.
  • IP-based location is approximate at best and frequently wrong by a wide margin.

Privacy and data handling

Runs entirely in your browser

  • Everything except the IP address is read from your own browser and stays in the page.
  • The public IP address is looked up by making a request to this site's own server, which reads the address from the connection and returns it. The address is not logged for this purpose beyond ordinary web server logs, and no third-party IP service is involved.
  • Nothing shown here is stored, and none of it is sent anywhere else.

Site-wide data handling, including analytics and advertising, is described in the privacy policy.

Frequently asked questions

Is my IP address a personal identifier?

Under regulations such as the GDPR it is generally treated as personal data, because it can identify a subscriber when combined with records held by an internet provider. On its own it identifies a connection.

Why does my location look wrong?

Location derived from an IP address is inferred from where the address block is registered and routed, which can be a different city or even country from where you are, particularly on mobile networks and VPNs.

Can websites really see all of this?

Yes, that is the point of showing it. Any page you load can read these properties without asking. Combined, they contribute to browser fingerprinting, which is why some browsers now deliberately blur several of these values.